Title :
Microwave emissivity retrieval from SSM/I data over land in China
Author :
Pan, Guangdong ; Wang, Chao ; Wang, Hongmei ; Tian, Guoliang
Author_Institution :
LARSIS, Acad. Sinica, Beijing, China
Abstract :
The technique is developed to retrieval microwave emissivity over land in China by using SSM/I spaceborne microwave radiometer data and multi-channel brightness temperature data. SSM/I multi-channel data acquired in July 20th/24th 1997 are processed, and the land microwave emissivity map of China is generated. Further more, the emissivity characteristics of land cover types are analyzed. The results show that different types of land covers have their own characteristic emissivity. Vegetation, surface roughness and water content are the main factors affecting land emissivity. This study provides a new method for macro and quick global change study (e.g. vegetation cover, hydrology etc.)
Keywords :
geophysical techniques; hydrological techniques; hydrology; radiometry; remote sensing; soil; terrain mapping; vegetation mapping; AD 1997 07; China; SSM/I; geophysical measurement technique; hydrology; land cover; land cover type; land surface; microwave emissivity; microwave radiometry; multi-channel brightness temperature; remote sensing; retrieval; roughness; soil moisture; spaceborne method; terrain mapping; vegetation mapping; water content; Brightness temperature; Hydrology; Information retrieval; Land surface; Microwave generation; Microwave radiometry; Microwave theory and techniques; Rough surfaces; Surface roughness; Vegetation mapping;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2000. Proceedings. IGARSS 2000. IEEE 2000 International
Conference_Location :
Honolulu, HI
Print_ISBN :
0-7803-6359-0
DOI :
10.1109/IGARSS.2000.861745
